Surah 5 : Ayah 63

لَوْلَا يَنْهَىٰهُمُ ٱلرَّبَّـٰنِيُّونَ وَٱلْأَحْبَارُ عَن قَوْلِهِمُ ٱلْإِثْمَ وَأَكْلِهِمُ ٱلسُّحْتَ ۚ لَبِئْسَ مَا كَانُوا۟ يَصْنَعُونَ

Why is it that their rabbis and scholars do not forbid them from saying words of sin and consuming unlawful earnings? Terrible indeed is what they commit!